The 19th-century pianist, whose sonatas, waltzes and other works defined the Romantic era, is back in the spotlight

A prolific composer with a world-wide following and an enviable sheaf of screen credits is having a moment—almost 170 years after his death.

The music of Frédéric Chopin, the 19th-century Polish pianist whose sonatas, waltzes and other works defined the Romantic era, has popped up in television shows like “Westworld” and “Mozart in the Jungle” ahead of several other projects devoted to him.